Which of the following reactions gives carboxylate ion in their reaction mixture?

Oxidation state of $\mathrm{S}$ in ${\mathrm{H}}_2{\mathrm{S}}_2{\mathrm{O}}_8$ is

Identify the correct statements from the folluwing (A) At 298 K, the potential of hydrogen electrode placed in a solution of \(\mathrm{pH}=10\), is -0.59 V (B) The limiting molar conductivity of \(\mathrm{Ca}^{2+}\) and \(\mathrm{Cl}^{-}\)is 119 and \(76 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}\) respectively. The limiting molar conductivity of \(\mathrm{CaCl}_2\) is \(195 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-\frac{1}{2}}\) (C) The correct relationship between \(\mathrm{K}_{\mathrm{c}}\) and \(\mathrm{E}_{\text {cell }}^0\) is \(\mathrm{E}_{\mathrm{ccll}}^{-}=\frac{2.303 \mathrm{RT}}{\mathrm{nF}} \log \mathrm{~K}_{\mathrm{c}}\)

The geometry of \(\mathrm{XeOF}_4\) is

For the reaction ${\mathrm{A}}_{\left(\mathrm{g}\right)}\rightleftharpoons {\mathrm{B}}_{\left(\mathrm{g}\right)}+{\mathrm{C}}_{\left(\mathrm{g}\right)}, \mathrm{A}$ is $33\%$ dissociated at a total pressure $\mathrm{P}.$ The correct relation between $\mathrm{P}$ and ${\mathrm{K}}_{\mathrm{p}}$ is

Which one of the following statements is correct?

The order of reactivity of the following compounds towards dilute aqueous $\mathrm{KOH}$ in ${\mathrm{S}}_{\mathrm{N}}1$ reaction is $\underset{\mathrm{I}}{{\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{Br}} \underset{\mathrm{II}}{{\mathrm{H}}_3{\mathrm{CCH}}_2{\mathrm{CHBrCH}}_3} \underset{\mathrm{III}}{{\left({\mathrm{CH}}_3\right)}_2{\mathrm{CHCH}}_2\mathrm{Br}} \underset{\mathrm{IV}}{{\left({\mathrm{CH}}_3\right)}_3\mathrm{CBr}}$

Among the chords of the circle \(x^2+y^2=75\), the number of chords having their midpoints on the line \(x=8\) and having their slopes as integers is

The lengths of the sides of a triangle are 13 , 14 and 15 . If \(R\) and \(r\) respectively denote circumradius and inradius of that triangle, then \(8 R+r=\)

Match the following

List -1 (Element)		List -2 \(\left(\Delta_{\mathrm{eg}}\mathrm{H}\right)\left(\right.\) in kJmol \(\left.^{-1}\right)\)
A	O	I	\(-200\)
B	F	II	\(-349\)
C	Cl	III	\(-141\)
D	S	IV	\(-328\)
		V	\(+48\)

The correct answer is

A coil having \(n\) turns and resistance \(R \Omega\) is connected with a galvanometer of resistance \(4 R \Omega\). This combination is moved in time \(t\) seconds from a magnetic flwx \(\phi_1\) Weber to \(\phi_2\) Weber. The induced current in the circuit is

The smaller side of the rectangle with the largest area, that can be inscribed inside a semi-circle of radius $2$ units is of length

Kernite and cryolite are the minerals of two elements X and \(\mathrm{Z}\). Respectively \(\mathrm{X}\) and \(\mathrm{Z}\) are